STCF07 datasheet(1/26 Pages) STMICROELECTRONICS

部件名	STCF07

功能描述	High power buck-boost white LED driver

PDF	26 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 26 page

This is information on a product in full production.

September 2012

Doc ID 16757 Rev 3

1/26

26

STCF07

High power buck-boost white LED driver

Datasheet

− production data

Features

■ Buck-boost DC-DC converter

■ Drives one power LED up to 1 A in flash mode

■ Drives one power LED up to 800 mA in

continuous mode

■ LED temperature protection

■ Output current control

■ 1.8 MHz (typ.) fixed frequency PWM

■ Synchronous rectification

■ High efficiency across the total input voltage

range

■ Operational modes:

– Shutdown mode

– High current mode: up to 1 A

– Low current mode: from 20 mA

■ Adjustable current in both modes

■ Peak inductor limited to 2.3 A (typ.)

■ LED disconnected from the battery in

shutdown mode

■ NTC LED temperature protection

■ Overvoltage protection: 5.3 V

■ Short-circuit protection

■ Overtemperature protection

■ ULVLO function

■ 1 µA max shutdown current

■ QFN16 (4 x 4 x 1 mm) 16 leads

Applications

■ Camera flash for mobile phones

■ Power supply for high power LEDs

Description

The STCF07 is a dedicated, size-optimized

solution for driving a power LED. The device is a

buck-boost converter which guarantees proper

LED current control over all possible battery

voltage and LED forward voltage conditions. The

output current control ensures good current

regulation over the forward voltage spread

characteristics of high-brightness LEDs. The

device includes various functions to protect the

chip and the power LEDs. These include soft-start

control as well as detection and protection of chip

overtemperature and shorted LEDs. An optional

external NTC is supported to protect the LEDs

against overheating. It is possible to separately

program the current intensity in HIGH and LOW

mode using the SEL pin. The device is housed in

a 16-lead QFN16 (4 x 4 mm) package with a

height less than 1 mm.

QFN16 (4 x 4 mm)

Table 1.

Device summary

Order code

Package

Packaging

STCF07PNR

QFN16 (4 x 4 mm)

Tape and reel

www.st.com

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